Process of refining brown sugar.



- No Drawing.

STATES ?ATENT UFFICE.

UNONLUNDGREN AND GUILLAUME GIERLINQ-OE BRUSSELS, BELGIUMI' PROCESS OF REFI'NING BROWN SUGAR.

gium, have invented new amluseful Im- 'proreineuts -Brown Sugar,

in the Process of Refining V I of which the following is a slwci'tication. I I

This invention is a process of refining raw sugar in a simpleaetlicient and economical manner.

- employed.

. lti involves the application of ozone or ozonized air'in the particular nanner hereinafter described.

The principal advantage of the )1'00035'15 that it successfully accomplishes the refining :uul bleaching" operations without necessitat ing the expensive operation of filtration through hone charcoal which is at present Ithas been proposed heretofore to employ ozone in relinlng sugar, but. So far as we. are aware noprocess employing ithas pr ved ommercially sueeesatul; the failures beingattributable to incorrect lllctllt)tl's,0t'

procedure. r

in praclicallv carrying out ur invention we proceed as follows: i. now customary, u'e lilsl l eaLihe raw Sugar so as to remove tlieretrixin .(he adhering syru n and this may be than; by washing with water, thoughpreferably by HfiHlg-l'lle gpeoml solutlonheie iuntler referred to. The waxhing's t'r'oni the sugar crystals are (llllllWl to Substantially 2Q llaunn' and lhe'resulting solution subjvt-t -tlywhile cohl, to the action of ozone or ozonizetl air. "lhisfsolut-ioz'a having: been thus bleached. a part. of it i z llh'tll to (lisaolvu the ,previously washed raw sugar the solution thus obtained being filtered, rehhiletl "and otherwis mauipnlatetl' in the cuatonnu" inzinnel'. The other part of the. bleacheil lution is employed, insleall'of the w" herein referral to to wash a fresh su of raw augmcrystals to r name the :atihe: in syrup iln-retrozn. lhui r normal. conditions of operation the 'tlu-ret'rom. and again on this removed syrup \\'hen the laltcr is treated tlllUCllY by the Specification of Letters Patent.

Patented June 3, 1913.

Application filed January 18, 1911. Serial No. 603,368.

we have found that these give the bes't results. 7 Having thus fully described the invention, what. '0 claim as new, and desire to secure by Letters Patent is:

1. In the art of refining sugar,- theproc-- ess which consists in bleaching a cold1solu- Y tion of sugar of a density of substantially 20 Bunnie by subjecting it to the action of ozone or ozonized air. 7 V

ZfInLthe art of refining sugar, theproc-- ess whiclrconsists' in bleaching a solution of sugar by ozone, utilizing a portion of the lutiou thus bleached for washing raw sugar crystals, and utilizing another port-ion'of said bleached solution for dissolving sugar cryistals free from syrup.

3. In the art of refining sugar, th-e prce which consists in bleaching acold .foli'v' tion of sugar of a density of substantially 20" llaiun b .snbj ,ctingz it. to the action of'QG' ozone or orwnizml air, and using aportion of the solution thus bleached for washing raw Sugar.

4. In the artof refining sugar, the prom can which (our-Ibis in bleaching a cold solu tion of sugar .4)? a density of substantially 20" 1''; me hy Eubiceting'it to the action of o/amo q our/mo air, nging a portion. of the.

aolutioi thus bleached for washing raw sugar, and using a further portion of the 106 said solution for dissolving sugar crystals free from syrup.

ti. 'lhe continuousprocess of refining sugar \VllKfll cons sts in removing adhering;

syrup from a batch of raw sugar, bleaching 106 said syrup washing a further batch of raw sugar by a part of the solution thus bleached, and tlifieifllvlh if sugar free from syi'up in' another portion of the. said bleached solution.

(3. The continuous process of i'etininlf 110 sugar which consists in removing adhering syrup from a batch f rmVsugar, bleaching said syrup by ozone, washin a further batch of raw sugar by a part of t solution thus bleached, and dissolving sugar free from solution. 7 f7 The process of refining sugar which consists in washing the syrup therefrom with water, concentrating the aqueous solution thus produced until itreaches a'density of 20? Baum, bleaching the resultina solution by ozone, washing a; further batch of raw sugar by apart of the solution thus solution. 4 syrup in another portion of the said bleached bleached and dissolving sugar free from syrup in another portion of the said bleached V 1-5 vIn testimony whereoi we have signed our names to this specification in the presence of two subscribing witnesses.- 3

UNO .LUNDGREN. Y GUILLAUME GIERLING. v Witnessesz V GEORGE BEDE,

M. GERBEAULT. 

